KR100291335B1 - Ground Excavation Air Hammer - Google Patents

Abstract

The present invention relates to an air hammer for drilling a ground, and is provided with a hollow cylindrical case (2) forming the outer side of the air hammer (1), the check valve (3) and the inner cylinder ( Various components such as the piston 5 and the lower drive sub 6 of 4) are installed in a built-in manner, and the case reinforcement member 7 is covered and fixed to the outside of the case 2, and the case reinforcement member 7 is fixed. On the surface of the spiral projection (7a) is formed continuously, and the top sub (8) is provided with a hexagonal head (8a) to be coupled to the top of the case (2) and connected to the rod of the equipment, A connecting packing 9 is inserted and installed at the tip of the top sub 8 to connect with a rod of equipment, and the lowering of the connecting packing 9 is placed on the check valve 3 of the case 2. Block 10 is installed to block the weight, the front and rear weight of the drive sub (6) of the case (2) And the bit 11 which is drilled through the ground by the rotational force is connected to the structure, by increasing the durability of the air hammer can extend the life of the air hammer, which is expensive equipment, and also increase the efficiency of the equipment to use the equipment Not only will the range be expanded, but the work speed and productivity can be improved while reducing the cost of work.

Description

An air hammer for digging the ground

The present invention relates to a ground drilling air hammer, and more particularly, to a ground drilling air hammer that can be easily connected to a vehicle, a crane, etc. to be able to more easily drill holes in the ground or rock by high pressure air.

In general, during the foundation work such as civil engineering or construction work, there is a work to prevent settlement of the ground so that the building erected on the ground can be firmly located. For this work, usually a beam or pile is attached to the ground or rock. Excavation work or drilling work is to be done.

That is, in order to drill a hole in a solid ground or rock as described above, a hammer having a strong rotational force and a driving force is connected to the equipment supporting the same. In recent years, an air hammer using high pressure compressed air is mainly used. .

Here, the air hammer is mounted on the auger (101), a crane, an excavator, etc. as shown in Figure 4 to be able to drill holes in the ground or rock during the foundation work.

Then, the structure of the air hammer 102 installed in the equipment 101 and used to drill holes in the ground as shown in Figure 5, as shown in Figure 5, the hollow long cylindrical case 103 inside the air hammer ( A top sub-104 having various components for applying a force to the 102 and having a screw 104a formed at the upper end of the case 103 to be coupled to the case 103 and to be connected to the rod of the equipment 101. Is mounted, the lower end of the case 103 is provided with a plurality of tips 105a are provided with a bit 105 to be bored in the ground by the forward and backward propulsion and rotational force.

And, as shown in Figure 6, the internal parts of the air hammer 102 embedded in the case 103, the packing 106 for connection to the connection portion that the rod of the top sub-104 and the equipment 101 is connected ) Is installed, and a check valve 107 for controlling the air pressure is installed at the lower portion of the connecting packing 106, and an inner cylinder 108 is formed in the lower direction of the check valve 107 to form the inner cylinder. The piston 109 is provided in the vertical movement (108), the lower portion of the piston 109 has a structure in which the bit 105 is connected through the drive sub 110.

Accordingly, the air hammer 102 having the above structure operates the piston 109 of the inner cylinder 108 by using external high pressure air, and at the bottom of the bit by the rotational force of the drive sub 110. The thrust and rotational force is supplied to 105 to drill holes in the ground.

However, the air hammer 102 having the above structure has a drawback in that the case 103 containing various main parts is exposed to the ground as it is without any reinforcing means, and thus the life is shortened due to wear. Since the top sub-104 installed on the upper part of the 103 is a screw type suitable for a vehicle or equipment of a certain size, it is difficult to mount on a large equipment such as a large crane.

Accordingly, the cost of the air hammer 102 is reduced due to the shortened lifetime of the air hammer 102, the workability of the air hammer 102 is limited by the shape of the top sub-104, while the air hammer ( The connection packing 106 installed on the upper portion of the 102 is introduced into the check valve 107 in accordance with the use of the air hammer 102, thereby interfering with the operation of the check valve 107, and thus the air hammer 102 There were various problems such as stopping or malfunctioning functions.

Accordingly, the present invention has been made to solve the above problems, to provide a ground drilling air hammer to maximize the efficiency of the air hammer while extending the life of the air hammer by reinforcing the structure of the air hammer. The purpose is to.

In order to achieve the above object, the present invention provides a hollow cylindrical case in which various parts such as an upper check valve and a piston of an inner cylinder, a lower drive sub, and the like are embedded, and is fixed to the outside of the case. A case reinforcement member having a spiral protrusion formed on the surface thereof, a top sub-section provided with a hexagonal head to be coupled to the upper part of the case and connected to the rod of the equipment, and a connection of the rod of the equipment to the tip of the top sub It is a structure consisting of a connection packing and a bit connected to the drive sub of the case is installed for the purpose of drilling the ground by the forward and forward propulsion and rotational force.

In addition, the blocking plate is installed on the upper check valve of the case to prevent the connection packing from being pushed downward by the vertical movement of the piston.

That is, as the top sub of the upper part of the case forming the air hammer has a hexagonal head, the hexagonal grooves are inserted into the rods of various equipment, and the assembly thereof is simplified. In addition to improving the durability of the case as well as the spiral protrusion formed on the outside of the case reinforcing member is to be able to perform the excavation work of the ground more easily.

Therefore, the outer case of the air hammer can be reinforced, thereby improving the durability of the air hammer to extend the life of the air hammer, which is expensive equipment, and also increase the efficiency of the equipment to increase the range of use of the equipment Not only can it be expanded, but it can also improve the workability and productivity by reducing the cost while working.

1 is a perspective view showing the appearance of an air hammer according to the present invention,

2 is an exploded perspective view showing the structure of an air hammer according to the present invention;

3 is an assembled sectional view showing the internal structure of the air hammer according to the present invention;

4 is a schematic diagram showing a state of an air hammer generally used mounted on the equipment,

5 is a perspective view showing the appearance of an air hammer according to the prior art,

Figure 6 is an assembled cross-sectional view showing the internal structure of the air hammer according to the prior art.

Explanation of symbols on the main parts of the drawings

1: air hammer 2: case

3: check valve 4: inner cylinder

5: piston 6: drive sub

7: case reinforcing member 7a: spiral protrusion

8: top sub 8a: head

9: connection packing 10: blocking plate

11: bit

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

1 is a perspective view showing the appearance of an air hammer according to the present invention, Figure 2 is an exploded perspective view showing the structure of the air hammer according to the present invention, Figure 3 shows the internal structure of the air hammer according to the present invention Assembly cross section.

As shown in the drawing, a hollow cylindrical case 2 is formed to form the outer side of the air hammer 1, and the check valve 3 and the inner cylinder 4 of the case 2 are provided. Various parts such as a piston 5 and a lower drive sub 6 are installed in a built-in manner, and the case reinforcement member 7 is covered and fixed to the outside of the case 2, and is fixed to the surface of the case reinforcement member 7. The spiral protrusion 7a is continuously formed, and the top sub 8 having the hexagonal head 8a is installed to be coupled to the upper part of the case 2 and connected to the rod of the equipment. A connecting packing (9) is inserted and installed at the tip of (8) to connect with the rod of the equipment, and the lowering of the connecting packing (9) is blocked on the check valve (3) of the case (2). The blocking plate 10 is installed, and the drive sub 6 of the case 2 is applied to the forward and backward propulsion and rotational force. A bit structure 11 that is to ttulge the ground connection is installed.

Here, the case reinforcing member (7) is installed to protect the case (2) is added to the existing case (2), the material and shape is made of high-strength steel pipe material to withstand the ground or rock contacted enough It is designed to be able to, and also the outer circumferential surface of the case reinforcing member (7) is formed a spiral projection (7a) is to be able to maximize the efficiency of the work even when the ground is hard or hard work.

The top sub 8, which is screwed to the upper portion of the air hammer 1 and connects the rod and the air hammer 1 of the equipment, is made of a special steel whose head 8a is a hexagonal joint type. Regardless of whether the equipment to which the air hammer 1 is connected becomes a small vehicle or a large crane, the air hammer 1 can be mounted and used for various purposes, thereby increasing the working range of the equipment.

On the other hand, the inner cylinder (4) embedded in the case (2) is formed by high-strength special steel to increase the durability and to extend the life and to increase the efficiency of the work and to reduce the cost.

In addition, since the air hammer 1 is operated by the piston 5 using high pressure air, the connecting packing 9 for connecting the equipment to the top sub 8 of the air hammer 1 is an air hammer. It is pushed toward the inner lower direction of (1), and thus it is often brought into contact with the check valve 3 of the air hammer 1 to paralyze its function, so that the inflow of the connecting packing 9 in the lower direction The blocking plate 10 is installed on the top of the check valve (3) to prevent.

Due to the installation of the blocking plate 10, it is possible to prevent the inflow of the connecting packing 9 to prevent the failure of the air hammer 1 due to the malfunction of the check valve (3).

Therefore, by changing and improving the structure of the air hammer 1 as described above, it is possible not only to increase the performance of the air hammer 1 itself, but also to increase the efficiency of the equipment connected to the air hammer 1.

As described above, according to the ground drilling air hammer according to the present invention, by increasing the durability of the air hammer can extend the life of the air hammer, which is expensive equipment, and also increase the efficiency of the equipment to increase the range of use of the equipment As well as being enlarged, it is possible to increase the speed of work while reducing the cost of work, thereby improving workability and productivity.

Claims (1)

A hollow cylindrical case 2 having various parts such as a check valve 3 provided with a blocking plate 10 provided thereon and an internal cylinder 4 piston 5 and a lower drive sub 6; The case reinforcement member 7 which is covered and fixed to the outside of the case 2 and has a spiral synchronous 7a continuously formed on the surface thereof, and coupled to the upper part of the case 2, can be connected to the rod of the equipment. A top sub 8 with a hexagonal head 8 a is installed at the tip of the chop sub 8 for connection with a rod of equipment and is pushed downward by the vertical movement of the piston 5. Bits which are connected to the packing packing 9 and the drive sub 6 of the case 2 which are controlled by totally controlling the blocking plate 10 so as not to fall down, to be drilled on the ground by forward and rearward propulsion and rotational force ( 11) Ground Excavation Air Hammer.